Charge sensing of excited states in an isolated double quantum dot

A. C. Johnson, C. M. Marcus, M. P. Hanson, and A. C. Gossard
Phys. Rev. B 71, 115333 – Published 31 March 2005

Abstract

Pulsed electrostatic gating combined with capacitive charge sensing is used to perform excited-state spectroscopy of an electrically isolated double-quantum-dot system. The tunneling rate of a single charge moving between the two dots is affected by the alignment of quantized energy levels; measured tunneling probabilities thereby reveal spectral features. Two pulse sequences are investigated, one of which, termed latched detection, allows measurement of a single tunneling event without repetition. Both provide excited-state spectroscopy without electrical contact to the double-dot system.

  • Figure
  • Figure
  • Figure
  • Figure
  • Received 11 November 2004

DOI:https://doi.org/10.1103/PhysRevB.71.115333

©2005 American Physical Society

Authors & Affiliations

A. C. Johnson and C. M. Marcus

  • Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA

M. P. Hanson and A. C. Gossard

  • Department of Materials, University of California, Santa Barbara, California 93106, USA

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 71, Iss. 11 — 15 March 2005

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review B

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×